Machine tool



- 'Afaussv I 1,765,203

MACHINE TOOL Filed March 29, 1928 2 Sheets-Sheet 1 Fig.1

nvwyrm 9 E June 17, 1930. A. BUVSSYY 1,765,203

MACHINE TOOL Filed March 29, 1928 2 Sheets-Sheet 2 IN VEN TOR BY a? WFWATTORNEY Patented June 17, 1930 uNrrEn s Arss earner series ALFREDBUSSY, or rams, rnancn assrsnon 'ro oo'mraeivin rnAnoArsn :oEs

MACHINES-OUTILS DE PRE crsion, or PARIS, FnAnoE 1 MACHINE TOOLApplication filed March 29, 1928, serial No. 265,658, and in France A rn15, 1927.

With existing machine-tools the top slide or movable poppet that carriesthe tool moves in guiding parts located on top the bed and the tooldrive is necessarily effected 5 in an irrational manner by means of abelt connected with a motive device positioned above. Moreover, withsaid machines, the oil and the cooling liquid required for operation aswell as dust, filings and other impurities are thrown on to frictionpieces, causing abnormal wear and, consequently, impairing the accuracyof the machine.

The object of my invention is to provide improvements applicable tomachine-tools such as cutting, screw, turning, etc. machines, but moreespecially to grinding machines, for the purpose of doing away with theabove mentioned inconveniences. Broad 1y, said improvements consist insuspending, at a certain height above the bed, the toolholding puppet ordevice in a slide or guide way carried by a cone-shaped, arm-shaped orotherwise suitably shaped support, such an arrangement ensuring thefollowing ad- 2 vantages:

(a) It leaves on the bed an available clearance below and in rear of thetool, permitting working devices to be positioned and,

especially, affording a passage for a driving belt extending towards thefloor directly to the motor, this method of transmission being thesimplest, the least cumbersome and the most rational possible, since thenormal tension of the belt has the eifect of pressing the sliding partsupon their guideways, thereby eliminating any looseness of assembly;

(b)'It permits lubricating or cooling liquid to overflow on to themachine without any objectionable result ensuing therefrom since saidliquid only overflows on to the bed of the machine only after it hasdone its duty and without coming into contact with any part of themechanisms.

I have illustrated, as'examples, various possible embodiments of myinvention in and by a drawing appended hereto and wherein: c p I Figure1 is a front view of a semi-automatic grinding machine provided with theimprovements that are characteristic of my invention;

Figure 2 is a side view of the same;

Figures 3 and 4; show modifications.

The bed of the machine is denoted'at 1, while 2 denotes-the partssupporting between centres the piece to beground, on the workholdingcarriage 10. w v

3 denotes the dome characteristic of my invention, the shapeandarrangementrof which should be suited to the kind of machine to befitted up. At the upperpart of Y said dome and on the inner side thereofare secured two guideways 4 onwhich is slidingly mounted the toolholding carriage '5 that supportsthe millstone tithe spindle of whichrevolves inbearings 7. The driving pulley for said millstone isindicated at 8.

. As will be clearly seen from Figure 2, the movable set or carriage 5-6is suspended below dome 3above bed 1 and the whole of the rear part isquite clear, permitting, as at ready stated, working devices to behoused and affording a passage for the driving belt 9fi connectedwith amotor positioned on them oor. i Moreover, dust, filings or otherimpurities, as well as oil or the cooling liquid,

freely drop'on the bed without coming into contact with'the frictionsurfaces. '50

.In the embodiment shown by Figure '3, s the dome 3 is replaced by'anarm 3 where on are secured the guidewaysor. Slides 4 upon which rests"part 8. This device is especially suitable for small machines;

With the embodiment shown by Figure 4:,the device is intended formachines comprising tools of considerable weight. This device isconstituted by an arm 3", provided with a slide 4; and combined with asecond arm also provided with a slide 4?". The too-holder 5, ofsuitablesection, slides in guideways 4:! and 4. The tool 6 revolves round aspindle integral with part 5", said spindle being driven by means ofa-pulley 8 through a belt.

The above described embodiments should not be considered as in any caselimitative and I reserve the right to introduce any-v desirableconstructional modifications and/or alterations Without being deemed todepart from the scope of my invention.

Having noW particularly ascertained and described the nature" of myinvention as well as the manner in which the same is to be performed, Ideclare that What I claim is: r 7

Claims V V 1. In a machine tool, in combination, a 10 bed, a tool, meansfor supporting the tool above said bed, a Work holding table to one'sideof said supporting means, mechanism for driving said tool located on theopposite side of said supporting means, and, 1:- transmission means fromthe driving mechanism to the tool passing through the tool supportingmeans. 1

2. A machine tool asin claim Govt herein the tool is adjustably mountedin the said 2 supporting means. 7

3. Ina machine tool, a bed, a Work holding carriage on said bed'to oneside of a vertical axis thereof, an arched member spaced from said'axisand havingits legs secured to the said bed, guideWays-mounted on theunderside of the arched member, and a tool slidingly supported on saidguideways.

In a grinding machine, a bed, a Work supporting table, centering meanson said table, an arched member extending above the bed. to one side ofsaid centering means, guideWays on the underside of the arched member, agrinding Wheel, and means for slidinglygmounting said grinding Wheel onsaid guideways. I

5. In a grinding Wheel according toclaim 4, means for driving the toolincluding an element extending through the legs of the arched member. I40 6. In a machine tool, in combination, a

bed, a Work supporting carriage on said bec meansfor holding a tool overthe Work sup porting carriage, said means. 1 including guidevvays, atool slidingly mounted on said .45 guideWays, and means for driving saidtool,-

1 5o ture.

said means including an element and extending through and being clear ofsaid tool holding means. In testimony whereof I afiix my signa- I ALFREDBUssY.

